.env code example

Example 1: dotenv

$ npm install dotenv

//--------------------

on file .env 
//--------------------
DB_HOST=localhost
DB_USER=root
DB_PASS=s1mpl3
DB_NAME=banco_de_dados
DB_PORT=3306
//--------------------

import the config from .env file 
//--------------------

require('dotenv').config()
module.exports = {
    username:process.env.DB_USER,
    password:process.env.DB_PASS,
    database:process.env.DB_NAME,
    host:process.env.DB_HOST,
    dialect:"mysql"
}

Example 2: .env

require('dotenv').config()

Example 3: .env

require('dotenv').config()
const dotenv=require('dotenv');

//Usuage
process.env.NAME

Example 4: .env

npm install dotenv

Example 5: .env tutorial

npm install dotenv --save

Example 6: .env tutorial

const express = require('express');const app = express();const port = process.env.PORT || 3000;require('dotenv').config();app.get('/', (req, res) => {    res.send(process.env.SECRET_KEY);})app.listen(port, () => {    console.log(`Server is running on port ${port}.`)})